Title:
MANUFACTURE OF METALLIC SODIUM
Document Type and Number:
Japanese Patent JPS5467506
Kind Code:
A
Abstract:
PURPOSE:To manufacture a high purity Na by preventing the occurrence of cracks in diaphragm by the procedure in which the molten salt of Na compound having reduced K content is subjected to a diaphragm process electrolysis. CONSTITUTION:The molten salt of Na compound whose K content is reduced to preferably 0.01 wt% is subjected to electrolysis using the diaphragm 4. In this case, the diaphragm 4 used is a crystalline ceramic having a permeability for monovalent alkali ions, and the cathode 2 used is metallic Na. In electrolysis of the anolyte I, Na ion passes through the diaphragm 4 to approaches the cathode 2, where metallic Na is formed and overflowed from 6 for collection. The use of the Na compound molten salt of reduced K content prevents the development of cracks in diaphragm, thus greatly lengthening the life of diaphragm and also permitting the production of hgh purity Na.
Inventors:
KOSHIBA JIYUNJI
MIURA MASAMICHI
TAKAHASHI KAORU
IGARASHI NOBORU
YOSHIDA HIROYUKI
SHIGEFUJI YOSHIO
MIURA MASAMICHI
TAKAHASHI KAORU
IGARASHI NOBORU
YOSHIDA HIROYUKI
SHIGEFUJI YOSHIO
Application Number:
JP13412377A
Publication Date:
May 31, 1979
Filing Date:
November 10, 1977
Export Citation:
Assignee:
TOYO SODA MFG CO LTD
TOSHIBA CERAMICS CO
TOSHIBA CERAMICS CO
International Classes:
C25C3/02; (IPC1-7): C25C3/02